PosterPDF Available

Influencia del lince (Lynx pardinus) en los patrones de actividad circadiana del zorro (Vulpes vulpes)

Authors:
  • Instituto de Biología de la Conservación - IBiCo
  • IBiCo - Instituto de Biología de la Conservación, Madrid, España

Abstract

Las relaciones temporales entre el zorro y el lince han sido escasamente estudiadas.En este estudio analizamos la posible segregación temporal entre ambas especies de carnívoros como posible mecanismo de coexistencia.Para ello se establecieron dos parcelas de muestreo en la nueva área de reintroducción de lince ibérico de Sierra Morena Oriental. Una de las parcelas (Lince) albergaba los territorios de dos linces establecidos en la finca desde su liberación el año previo.En la otra parcela (No lince), la presencia de lince fueanecdótica durante el transcurso del estudio.Se estimaron los patrones de actividad diaria de conejo yzorro mediante ajustes no paramétricos de funciones de densidad de Kernell, se analizaron diferencias en estas distribuciones entre zonas para cada especie mediante el test Mardia-Watson-Wheeler y se estableció la sincronicidad entre los ciclos de actividad zorro-conejo para cada parcela mediante una correlación de Pearson. La selección del zorro por cada periodo del día se evaluó mediante el Índice de Selección de Jacob (JSI), estimando los intervalos de confianza mediante bootstrap.No se encontraron diferencias significativas entre parcela Lince Vs No lince para los ritmos de actividad del conejo (W:2.79, p=0.41), mientras que los resultados fueron marginalmente significativos en el caso del zorro (W:4.55, p=0.10). La actividad del zorro fue más nocturna (JSI:0.85 IC:0.72 a 0.95) y evitó con mayor intensidad las horas del día (JSI:-0.95 IC:-1 a -0.85) en la parcela Lince que en la No lince (noche (JSI:0.66 IC:0.50 a 0.79; Día JSI:-0.78 IC:0.72-0.95). la sincronicidad zorro-conejo en la parcela lince fue significativamente negativa (-0.27 p<0.001), mientras que no existió sincronicidad en la parcela no lince. Estos resultados confirman la existencia de cambios en los ciclos de actividad del zorro como mecanismo de coexistencia con una especie de carnívoro dominante como el Lince Ibérico. Estos cambios provocan, a su vez que el zorro des-sincronice su actividad con la del conejo, una de sus presas principales.
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Influencia*del*lince*ibérico*(Lynx%pardinus)*
en*la*actividad*circadiana*del*zorro*(Vulpes vulpes)
Antón*Álvarez*Bermúdez1,*Germán*Garrote*Alonso1,*Ramón*Perez de*Ayala2
1.-
Instituto*de*Biología*de*la*Conservación*(IBiCo)*-
C/Nebli,*nº*13,*28230,*Madrid
2.-
WWF
-C/*Gran Vía de*San*Francisco,*nº*8,*28005,*Madrid
INTRODUCCIÓN
Actividad%circadiana
Preferencia%temporal
Relación%circadiana%
depredador-presa
Mardia-Watson-Wheeler
+,-./0/012,31-45360/312512/6,31780749/0531
Estimación%de%los%patrones%de%actividad%circadiana
:;436531<,1./0/-=6087,31251>4<78,<53125125<382/21251?50<59
RESULTADOS
Agradecimientos
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Índice%de%Selección%de%Jacobs
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MATERIALES YTODOS
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Coeficiente%solapamiento
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circadiano GWH B 35 .0,2475 4</
sincronización negativa GVH 7,< 59
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Análisis%estadístico
Lince%VS%%%%%%%%%No%lince
Influencia%del%lince%ibérico
Preferencia%temporal
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p= 0)10P
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Grado%de%sincronización
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Lince%ibérico
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25.052/2,053
Zorro
Especie%subordinadab%c #
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Ø^/3 interacciones intragremiales asimétricas G7,< 4< 7,-.5682,0 34.508,0 B,60, 8<>508,0H
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Ø^/ especie subordinada G7,-.5682,0 8<>508,0H /;436/ 34 7,-.,06/-85<6, ./0/ -8<8-8A/0 9,3
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7,9,7/2/31/91./3,15<17/-8<,31,1I5052/31B138<1/60/B5<65
Lince ($Vh1<,7S53!60/-./H
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No%Lince%($W% <,7S53!60/-./H
Q0535<78/125198<751/<572Y687/
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Área%de%estudio
CONCLUSIONES
biologiadelaconservacion.org
1. T7S,5<50)1k#1N#1X53,4075 Q/06868,<8<M 8<1@7,9,M87/9 +,--4<86853#1Science 185, $fiWd1G'dfVH#
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4. Q/9,-/053)1O#1m1+/0,)1k#1K#1]<6503.578>87 ?8998<M /-,<M K/--/98/< +/0<8I,053#1The American6Naturalist 153,
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@40,.5_18-.987/68,<3 >,0 3.57853 7,5E8365<75#1Behavioral Ecology and6Sociobiology 68, 'V"Wi'V'f1G$"'VH#
6.%Q/9,-/053)1O#)1O50050/3)1Q#)1O5208/<8)1j#1K#1m1[598F53)1K#1T./68/9 X59/68,<3S8.3 o56n55< ]F508/< ^B<E1/<21U6S50
+/0<8I,053 8<1/< :05/ ,>1T,46S!N53650<1T./8<#1The Journal of6Applied Ecology 33, &1G'dd%H#
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/<21@40,.5/< 0/FF863 8<16S580 </68I5 0/<M5#1Population Ecology 57, &d'i&dd1G$"'&H#
8. [D/A!X48A)1O#)1+/0,)1j#)1[598F53!K/65,3)1K#)1:00,B,)1o#1m1O50050/3)1Q#1[08I5031,>10521>,E G1Vulpes vulpes H12/89B /768I86B_1.05B
/I/89/F8986B)1S4-/<1283640F/<75 ,0 S/F86/6 360476405q1Journal of6Zoology 298, '$hi'Wh1G$"'%H#
9. r50M/)1j#1et6al. U<6,M5<B ,>12/89B /768I86B /<217807/28/< 0SB6S- 8<16S5 ]F508/< 9B<E G^B<E1./028<43H#1Applied Animal6
Behaviour Science 169, %$i%h1G$"'&H#
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Ethology 119, '"VVi'"&%1G$"'WH#
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Bibliografía
[D/ t,7S5
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